eowley



(NoModel.) E' A. ROWLEY MACHINE TABLE.

No. 262,323. Patented Aug. 8, 1882.

FIG. I.

mm E

,gie-MEI INVENTOR afm MC/f NITED STATES PATENT OFFICE.

EDWIN A. ROWLEY, OFv WILLIAMSPORT, PENNSYLVANIA, ASSIGNOR T() ROWLEY & HERMANCE, 0F SAME PLAGE.

MACHINE-TABLE.

SPECIFICATION forming part of Letters Patent N o. 262,323, dated August 8, 1882.

Application filed June 5, 1882. (No model.)

To all whom tt may concern:

Be it known that I, EDWIN A. RowLEY, of WVilliamsport, in the county of Lycoming and State of Pennsylvania, have invented certain new and useful Improvements in Hand Planers or Jointers, of which improvements the following is a specification.

The object of my invention is to enable the tables of a hand-planer to be raised and lowered equally at all points, so as to insure their true horizontality in any position in which they may be adjusted relatively to the cutter-head.

rlo this end my improvements consist in the combination of a fixed frame having four segmental guides, a movable yoke provided with blocks fitting in said guides, and a table supported upon said yoke; also, in the combination of a fixed frame, four segmental guides, a movable yoke, and an adjusting-screw and links connected to the yoke; also, in the combination cfa xed frame, four segmental guides, and means for independently adjusting Asaid guides relatively to the frame. The improvements claimed are hereinafter more fully set forth.

In the accompanying drawings, Figure 1 is a view in perspective of a hand-planer embodying my invention; Fig. 2, a vertical longitudin al section through the same; Fig. 3, aplanA or top view of one ofthe movable yokes; Fig. 4, a transverse section through one ofthe tables and a pair of the segmental guides; Fig. 5, a side view,in elevation, of one ofthe guides; and Fig. 6, a transverse section through the same.

The frame A ofthe machine is composed of two vertical standards united by upper and lower cross-bars cast in one piece with the standards, and supports centrally upon its top the bearings b of a transverse shaft, B, Aupon which the cutter-head B is secured. The tables C, over which the stock is passed to and from the cutter-head, are each supported. on four lugs, 0l, which are faced oft' truly at top, and are formed at the corners of a yoke or frame, D, each table being secured to one ot' the lugs of its yoke by a set-screw, c, passing through a slot in the table, so that the latter may be adjusted toward and from the cutter-head, as may from time to time be required. Each ofthe lugs d of the yokes is secured by a bolt, e', to a curved block or die, e, fitting in a segmental guide-slot, e2, formed in a guide, E, secured to one of the upper cross-bars of the frame A, adjacent to one ofthe lugs d, the vertical movements ofthe yokes and the tables which they carry, which are effected as presently to be described, being thus simultaneously and similarly governed at each of their four corners. Two of the guides E of each yoke are adjustable longitudinally upon the frame for the purpose of enabling the tables to be leveled byraisin g or lowering their corners, such adjustment being e'ected by means of bolts e3 passing through slotted holes in the guides and securing them to the frame, and by set-screws e4 e5 bearing against the ends of the guides and engagingthreadsin lugs e6, cast upon or bolted to the frame, and tongued or fitted between ribs to preventlateral motion. The yokesD and the attached tables C are moved vertically, as required, to raise and lower the working-surfaces ofthe tables relatively to the cutter-head by adjusting-screws F, which are rotated by handwheelsF in bearingsf, pivoted to han gersf, secured to the outer upper cross-bars of the frame A. The screws F en gage nuts f2, pivoted to the lower ends of double-armed levers f3, which are pvoted intermediate] y to the upper framecrossbars, and connected at their upper ends to links f 4, which are in turn pivoted to the yokes D.

It will be seen that by reason of the segmental guides E inthe vertical movements ofthe yokes and tables imparted by the rotation of the adjusting-screws the horizontality of the tables is preserved in all changes of position, as, being uniformly guided in curvilinear paths of similar radius at each of their four corners, they are necessarily raised and lowered equallythroughout. Further, the separate adjustment ofthe guides relatively to the frame enables independent adjustment of the level ot the tables relatively to the cutter-head to be readily made.

I claim as my invention and desire to secure by Letters Patent- 1. The combination, substantially as set forth, of a fixed frame having four segmental guides upon its top, a movable yoke connected ting the guides, and an adj ustin g-serew rotatto blocks fitting in said guides, and a table ing in a bearing on the frame and engaging supported upon said yoke. a nut pivoted to a lever connected to the yoke.

2. rl`he combination, substantially as set 4. The combination, substantially as set 15 5 forth, ofa table supported at each of its corners forth, of a fixed frame, segmental guides seby a bleek fitting a segmental guide secured to cured thereto, and a device for` independently a fixed frame, and mechanism by which the adjusting the guides upon the frame.

blocks are moved simultaneously in the guides. EDWIN A. R0 WLEY.

3. The combination, substantially as set Witnesses: ro forth, of a fixed frame, segmental guides se- THos. H. HARTMAN,

cured thereto, a yoke connected to blocks t- J S. TAYLOR. 

